In theory it should be plausable as the board does have and the technology uses 2 16x PCIE lanes, but again like Synth said you need to use hacked drivers and may even have to physically mod the motherboard as it is the northbridge that controls SLI or Crossfire.

__________________"Though I walk through the shadow of the Valley of Death I shall fear no evil as my C8 Carbine is locked and loaded."